Most Downloaded Optics & Laser Technology Articles

The main emphasis of this review is on thermal modelling and prediction of laser welding in metals. However as similar techniques are employed to model conventional welding processes such as arc, resistance...

In this paper, new fractional matrix generation by using different the periodic matrix sequences are considered. For a periodic matrix with period P, its integer forms and fractional forms can constitute...

Selective Laser Melting (SLM) is an Additive Manufacturing process (AM) that built parts from powder using a layer-by-layer deposition technique. The control of the parameters that influence the melting...

In the present investigation, a numerical finite element model was developed to simulate the hybrid laser arc welding of different aluminum alloys, namely 5××× to 6××× series. The numerical simulation...

Little information or guidance has been available to assist the development of a hospital's visual environment. A report on lighting and colour design schemes, accessible to non professionals with responsibility...

Light rays can easily be reflected to different path by mechanical movement of mirrors. Using this basic operational principle we can design parallel programmable optical logic device (PPOLD) by arranging...

The paper presents the method of preparation and study results of metal matrix composite coatings (MMC coating) in the system of Stellite-6 and tungsten carbides. Changes in microstructure, corrosion...

Laser welding of aluminium alloys typically results in porosity in the fusion zones, leading to poor mechanical and corrosion performances. Mechanical and chemical cleaning of surfaces has been used...

In this paper, we present experimental results on doping under 1% of Ni into ZnO sprayed thin films to create a ZnO intrinsic layer and evaluate the resulting beneficial effects. X-ray diffraction (XRD)...

The fusion–brazing connection of the dissimilar metal 5052 aluminum alloy/ST07Z steel was achieved by using the Nd:YAG laser with pure Al filler powder, and the effects of the laser power and powder...

The composite coatings were produced on the Ti6Al4V alloy substrate by laser cladding. Subsequently, the coatings were heated at 500°C for 1h and 2h and then cooled in air. Effects of post-heat treatment...

A brief review is given regarding ultrafast laser micromachining of materials. Some general experimental observations are first provided to show the characteristics of ultrafast laser micromachining....

Iron, as the basic industry material was extensively studied in the past, but it could still offer extended possibilities with the use of new processing techniques such as selective laser melting (SLM)....

The invention of first laser in 1960 triggered the discovery of several new families of lasers. A rich interplay of different lasing materials resulted in a far better understanding of the phenomena...

Micro- and Electro-Mechanical Systems (MEMS) form a group of transducers used for very precise mass sensing (in the range of femtograms) and force detection (in the range of piconewtons) changes. These...

The aim of this paper was to develop a one-step in situ method to synthesize the TiN reinforced Al metallic matrix composite coatings on Ti6Al4V alloy. In this method, the Al powder and nitrogen gas...

In this study, we have investigated the optical properties and spectral response of an isolated aluminum nanoring in pure and compositional regimes. The effects of geometrical and chemical modifications...